Lock-nut



No. 753,301. PATENTED MAR. 1, 1904.

F. 0BIOLS..

LOCK NUT- 4 APPLICATION 11.31) NOV. 7. 1 3.

NomonBL. F691, 12

U ITE STATES Patented March 1, 190 4,

PATENT OFFICE.

JOHN DORSEY VAR-GAS, OF VVINNEMUCGA, NEVADA.

f LOCK-NUT. I

SPECIFICATION forming partof Letters Patent No. 753,301, dated March 1,1904;

' Application filed November 7, 1903- Serial No. 18( l,247. (No model.)i

To rill whom/it Wmy concern:

7 Be a known that I, FRANKOBIOLS, acitiien of the United States,residing atVVin'nemucca,

in the county of Humboldt and State of Nevada, have invented a new anduseful "Lock- Nut, of which the following isaspecification.

This invention relates to nuts capable of being locked to their bolts toprevent them turning backward'ly thereon, and has for'its object tosimplify and improve such devices.

The inventionconsists in certain novel features of construction, ashereinafter shown anddescribed, and specified in the claims.

In the drawings illustrative of the invention, in which correspondingparts are denoted by like designating characters, Figure 1 is asectionalView illustrating the improved construc tion. Fig. 2 represents aperspective view of the improved nut and bolt disconnected. Fig. 3 is aside view of the improved locking-key detached.

The improvement herein described may be applied'to any form or size ofbolt or nut, but for the purpose of illustration is shown applied to anordinary form of bolt 10 and nut 11 for:

binding together a body of any suitable material, as 12. The bolt'isprovided with a longitudinal groove 13, extending transversely of itsthreads, and -,the nut is provided with one or more similar grooves 14,extending transversely of its threads and registering with the groove 13in the bolt when the nut is rotated. The nutgrooves are preferablyformed very shallow to avoid weakening the nut. Any number of thegrooves may be employed; 'but generally one will be arranged in the boltand two or more in the nut. For the purpose of illustration four groovesare shown in the nut; but it will be understood that any desiredrelative number may be employed without affecting the principle of theinvention.

Extending through the nut 11 are obliquelyformed channels 15,corresponding in number to the grooves 14 and opening relatively nearthe latter on one face of the nut and inclined outwardly and terminatingthrough the sides of the nut near their opposite faces. 1

A key member of substantially U shape, a

, shown in Fig; 3, is provided, the leg 16 adapted for insertion intothe registering grooves 13 14: and the leg 17 for insertion through theadjacent channels 15. The leg 17 is relatively thinner than the legportion 16, with its pro-.

truding end bent laterally to engage the adjacent face of the nut, as at18, to eflcctuiilly prevent its accidental displacement,

By inclining the channels or apertures 15 and terminating themcontiguous to the body member 12the relatively thin leg. portion 17 willstrike the body 12 at an angle, and as the key is forced home into theregistering apertures 13.14 the end 18 will be bent laterally upon theunyielding body 12, and thereby automatically clenched against the nut,as will be obvious.

The juncture 19 of the two leg portions 16 17 of the key member willpreferably be formed thinner than the body portion of the leg 17 tofacilitate the bending into U shape. By this simple means when the nutis set up as far as required one of the apertures 14 is caused toregister with the aperture 13 and the key placed in position, with itsleg portions in the respective apertures, as above described, and whenforced home by a blow of a hammer, wrench, or other implement theclenching is automatically completed, and the nut thereby effectuallylocked fast to the bolt and irremovable therefrom until the keyisdetached. The clenched end 18 will be of s uiiicient strength to resistany strains to which the nut will be subjected While in use, but illyield to a force sufficient to Withdraw it when the nut is to beremoved. The malwill be suflicient to permit attachment and detachmentof the key several times; but their cost will be so slight that a newone may be furnished each time the nutis removed. Having thus describedthe invention, what is claimed is.-.

1. In a nut-lock, a bolt having a longitudinal groove transversely ofits threads, a nut having a longitudinal groove transversely of itsthreads for registration withthe groove in through the nut, and a.U-shaped key with the said bolt, an aperture extending obliquely I legsthereof extending through the nut-aper:

ture and into said registering" grooves respectively, the leg whichextends through the nutaperture ,loeing of a length greater than the Vdepth of the aperture and adapted to extend its threads for registrationwith the groove in said bolt, an aperture through the nut spaced fromthe groove therein, and a U-shaped key with one of its leg membersadapted for engagement with said registering apertures and the other legfor extension through said nutaperture and bendable laterally in advanceof the exit of the aperture, to prevent the removal of the-key, c

3. In a nut-lock, a bolt having a longitudinal groove transversely ofits threads, a nut having a longitudinal groove transversely of itsthreads for registration with the groove in said bolt, an aperturethrough the nut spaced from the groove therein, and inclined outwardlyand terminating through the side near the inner face of the nut, and akey of sub.-

stantially U shape with one leg for engagement with said registeringapertures and other leg for extension through said inclined nut-apertureand bendablelaterally in advance of the exit of the aperture. f

i. In a nut lock, a bolt having a longitudinal groove transverselyof itsthreads, a nut having a longitudinal groove transversely of it's threadsfor registration with the groove in vSaid bolt, an aperture through thenut spaced from the groove therein, and inclined outwardly andterminating through the side near the inner face of the nut, and a keyof substantially U shape with one leg for engagement with saidregistering apertures and the other leg of reduced size and adapted forextension through said inclined aperture and bendable laterally upon thebody upon which the nut rests and against the outer surface of the nut.In testimony that I claim the foregoing as my own I have heretoafiixedmy signature in the presence of'two witnesses.

FRANK OBIOLS. Witnesses:

C. D. MAoKAY, C. E. RoBINs.

the

